Valve-gear for explosive-engines.



No. 783,105. PATENTED FEB. 21, 1905.

G. R. 6: A. G; DAELLENBAGH. VALVE GEAR FOR EXPLOSIVE ENGINES.

2, APPLICATION nun) 1030.16, 1903. ZBHBETS--8HEB-T 1.

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f 5 I y Y No. 783,105. PATENTED FEB. 21, 1905. c. R. & A.'G.DAELLENBAGH. VALVE GEAR FOR EXPLOSIVE ENGINES.

APPLICATION FILED D30. 16, 1903.

2 SHEETS-SHEET 2.

M Z m NITED STATES Patented February 21, 1905.

PATENT ()FFICE.

CHARLES R. DAELLENBACH AND ARTHUR G. DAELLENBACH, OF PARK GATE,PENNSYLVANIA, ASSIGNORS TO DAELLENBAOH GAS ENGINE COMPANY, OF PITTSBURG,PENNSYLVANIA.

VALVE-GEAR FOR EXPLOSlVE-ENGINES.

SPECIFICATION forming part of Letters Patent No. 783,105, dated February21, 1905.

Application filed December 16, 1903. Serial No. 185,375.

To to whom it may concern.-

Be it known that we, CHARLES R. DAELLEN- BAOI-I and ARTHUR G. DALLENBAOH, citizens of the United States, residing at Park Gate,

5 in the county of Beaver and State of Pennsylvania, have invented newand useful Improvements in Valve-Gear for Explosive-Engines, of whichthe following is a specification.

IO Our invention relates to improvements in explosive-engines; and ithasfor its general object to provide a simple and durable explosiveenginedesigned more especially for automobile and marine purposes and onewhich is I 5 reversible without the necessity of changing any of itsparts, is adapted to be readily controlled, and is so constructed thatthere is no liability of its valve mechanism being overheated and inconsequence impaired or dis- 2 abled.

With the foregoing in mind the invention will be fully understood fromthe following description and claims when taken in conjunction with theaccompanying drawings, in

2 Which Figure 1 is a longitudinal section of a fourcycleexplosive-engine constituting one embodiment of our invention. Fig. 2 isa detail view taken at right angles to Fig. l and in 3 the planeindicated by the broken line 2 2 of Fig. 1.

Similar letters of reference designate corresponding parts in both viewsof the drawings, referring to which 3 5 A is the working cylinder of ourimprovedv engine; B, a working-piston movable therein; 0, a crank-shaftconnected with the piston in the ordinary or any other approved manner;I), a valve-chamber connected by aport or pas- 4 sage with the workingcylinder; E, a valvechamber; F, an exhaust-valve arranged in the chamberD to control communication between the same and the chamber E and havinga stem 6; G, Fig. 2, a lever arranged to engage the valve-stem I) andhaving, by preference, an antifriction-roller c; H, a cam arranged toengage the roller Z; of lever G and having a teat or protuberance (Z onits perimeter; I, a gear fixed on the shaft J, which carries the cam H,and intermeshed with a 5 gear K, fixed on the crank-shaft (l, and L aspring for closing the valve F and normally holding the same to itsseat.

In virtue of the construction thus far described it will be observedthat the cam H is driven from the crank-shaft C and that incident toeach revolution of the cam the valve F and its stem 5 are raised andlowered; also, that the completion of the upward movement of the valveand stem is effected suddenly, this latter because of the teat orprotuberance d on the perimeter of the cam and for a purpose presentlypointed out.

The chamber E is provided with an exhaustport M and an explosive-inletport N and 5 contains a piston-valve P, designed to control the saidports. This piston-valve is loose on the valve-stem b and is connectedby a sleeve c with an abutment Q, disposed below the chamber E, betweenwhich abutment Q and 7 an abutment R, fixed on the stem, a coiled springS is interposed, as shown. The abutment Q, is, by preference, the upperhead of a cylinder T, which incloses the spring S and loosely receivesthe abutment R, and it preferably has its under side beveled at f for apurpose presently described.

The abutment Q and the abutment R, which is preferably beveled at g, aredesigned to operate in conjunction with a spring-backed 8O latch U,which has a beveled head it to engage the abutment Q and a beveled arm71, arranged to be engaged by the abutment R.

V is a chamber disposed below the chamber E and having an air-exit port7', controlled by 5 a valve in, and also having an air-inlet port Z,controlled by an outwardly-seating non-return valve m; W, a pistonarranged in the chamber V and formed integral with or otherwise fixedwith respect to the abutment Q; 'X, a 9 port or passage communicatingwith the port N and adapted to be connected with a source ofgasolene-supply; Y, 'a valve arranged to control the port or passage Xand having a stem a, connected to a lateral arm 71 on the cylinder T,and Z a hood arranged over the outer end of the port N and preferablyextending to a point adjacentto the casing containing the workingcylinder A and the valvechamber D.

The operation of our improved engine is as follows: Assuming that anexplosion takes place while the Working piston B is at the invner end ofthe working cylinder-A and the valve F is closed, the working piston isforced outwardly, or toward the crank end of the engine. When the saidpiston reaches the center, the valve F is opened and the products ofcombustion pass out through the port a, chamber D, chamber E, and theport M. The valve F remains open until the piston again arrives at theinner end of the chamber A, and in consequence all of the products ofcombustion are forced out of the chamber. Incident to the pistonreaching the inner end of the chamber A the teat or protuberance (Z onthe cam H engages the antifriction-roller 0 on lever G, and inconsequence the valve-stem b and valve F are raised to a greater extent.This causes the abutment R to engage the arm c' of the latch U andeflfect a disengagement of the said latch from the abutment Q. Followingthe release of the abutment Q the spring S expands and movesthe valve Ptoward the valve F, thereby closing the exhaust-port M and opening theexplosive-inlet port N and also opening the valve Y, controlling thegasolenesupply port X. On the subsequent outward stroke of the workingpiston B a charge of explosive-zl (2., mixed air and gas or gasolene-isdrawn into chamber A, and when the piston arrives at the center thevalve Fis closed, also the piston P moves downwardly, thereby closingthe portN and the valveYand opening the exhaust-port M. At the same timethe abutment Q, is engaged by the latch U, this to prevent the valve Pfrom closing communication between the chamber E and the port M duringthe following exhaust. On the subsequent inward stroke of the piston Bthe charge of explosive mixture is compressed, and at the propertimesuch mixture is exploded by an igniter (not shown) located, bypreference, in the chamber D. The operation described is then repeated.

The port Z and valve m permit air to enter the chamber V back of thevalve W, incident to the downward movement of the working piston, and inconsequence the valve P is enabled to freely move downward and uncoverthe port M. On the upward movement of the valve W, however, the valve oncloses, so that the only escape for the air back of the piston isthrough the passage 1'. This passage j being controlled by the valve 76,it follows that by closing the said valve is more or less the extent ofwhich the port N and the port Y are opened, and in consequence the speedof the engine, may be readily regulated.

'When desired, the valve 14 may be operated through the medium of a handor foot device;

but since said device per 86 forms no part of our invention we havedeemed itunnecessary to illustrate the same.

The products of combustion are discharged from the chamber A throughport a, working cylinder D, chamber E, and port M, while the mixed airand gas are taken into said working cylinder A through the port N,chamber E, chamber F, and port a. From this it follows that incident tothe taking of a charge the gasolene is caused to evaporate and rapidlycommingle with the air, so as to form a reliable explosive mixture, andat the same time the air prevents overheating of the valve mechanism andmaterially lessens the liability of the same being deteriorated ordisabled. The heating of the explosive mixture precedent to its enteringthe working cylinder A is a highly-important advantage, especially whenthe weather is cold, since it permits of a high speed being easilymaintained.

We have entered into a detailed description of the construction andrelative arrangement of the parts embraced in the present and preferredembodiment of our invention in order to impart a full, clear, and exactunderstanding of the same. We do not desire, however, to be understoodas confining ourselves to such specific construction and arrangement ofparts, as such changes or modifications may be made in practice asfairly fall within the scope of our invention as claimed.

Having described our invention, what we claim, and desire to secure byLetters Patent,

1. In an explosive-engine, the combination ofa working cylinder,aworking piston therein, a valve-chamber having an exhaust-port, and anexplosive-inlet port, a valve operated from the working piston forcontrolling communication between the working cylinder and thevalve-chamber, a piston or other suitable valve arranged in thevalve-chamber to control the exhaust-port and the explosive-inlet port,means for holding the said valve in one position, means for releasingsaid valve, and means for moving it, independent of the firstmentionedvalve, subsequent to its release.

2. In an explosive-engine, the combination of a working cylinder, aworking piston therein, a valve-chamber having an exhaust-port, and anexplosive-inlet port, a valve operated from the working piston forcontrolling communication between the Working cylinder and thevalve-chamber, a piston orother suitable valve arranged in thevalve-chamber to control the exhaust-port and the explosive-inlet port,means for holding the said valve in one position, means for releasingsaid valve,means for moving the said valve, independent of thefirst-named valve subsequent to its release, a piston connected with thesecond-named valve, and a chamber containing said piston, and having anoutlet for fluid, back of the same, and a valve controlling said outlet.

3. In an explosive-engine, the combination of a working cylinder, aworking piston therem, a valve-chamber having an exhaustport,

and an explosive-inlet port, a valve operated from the working pistonfor controlling communication between the working cylinder and thevalve-chamber, a piston or other suitable valve arranged in thevalve-chamber to control the exhaust-port and the explosive-inlet port,means for holding the said valve in one position, means for releasingsaid valve, means for moving the second named valve, independent of thefirst-named valve, subsequent to its release, a piston connected withthe second-named valve, and a chamber containing said piston, and havingan outlet for fluid,back of the same, and a valve controlling saidoutlet, and also having a fluid-inlet, and an outwardly-seating,non-return valve controlling the same.

4. In an explosive-engine, the combination of a working cylinder, aWorking piston therein, a valve-chamber having an exhaust-port, and anexplosive-inlet port, a valve arranged to control communication betweenthe working cylinder and the valve-chamber, and having a stem providedwith an abutment, mechanism intermediate of the working piston and thestem of said valve for operating the latter, a piston valve ar n ged'inthe valvechamber to control the exhaust-port and explosive-inlet port,an abutment loosely mounted on the stem of the first-named valve, andconnected with said piston-valve, a spring surrounding the valve-stemand interposed between the abutment thereof and the abutment looselymounted thereon, and a latch arranged to engage the loose abutment onthe valvestem and be engaged by the fast abutment thereof.

5. In an explosive-engine, the combination of a working cylinder, aworking piston therein, a valve-chamber having an exhaust-port, and anexplosive-inlet port, a valve arranged to control communication betweenthe explosion-chamber and the valve-chamber, and having a stem, providedwith an abutment, mechanism intermediate of the working piston and thestem of said valve for operating the latter, a pistonvalve arranged inthe valvechamber to control the exhaust-port and eX- plosive-inlet port,an abutment loosely mounted on the stern of the first-named valve, andconnected with said valve-piston, a spring surrounding the valve-stemand interposed between the'abutment thereof and the abutment looselymounted thereon, a piston connected with the piston-valve in thevalve-chamber, a chamber receiving the said piston and having afluid-outlet and a valve for controlling same, and also having afluid-inlet and an outwardlyseating, non-return valve controlling thesame, and a latch arranged to engage the loose abutment on thevalve-stem and be engaged by the fast abutment thereof.

6. In an explosive-engine, the combination of a working cylinder, aworking piston therein, a valve-chamber having an exhaust-port, and anexplosive-inlet port, a valve arranged to control communication betweenthe working cylinder and the valve-chamber and having a stem providedwith a fast abutment, mechanism intermediate of the working piston andthe stem of said valve for operating the latter; said mechanismcomprising a cam having a teat or protuberance on its perimeter, apiston valve arranged in the valvechamber to control the exhaust-portand explosive-inlet port, an abutment loosely mounted on the stemof thefirst-named valve, and connected with said piston-valve, agasolenesupply port communicating with the explosive-inlet port, a valvearranged to control the gasolene-port, and connected with the looseabutment,a spring surrounding the valve-stem and interposed between theabutment thereof and the loose abutment, and a latch arranged to engagethe loose abutment on the valvestem, and be engaged by the fast abutmentthereof.

In testimony whereof We have hereunto set our hands in presence of twosubscribing witnesses.

' CHARLES R. DAELLENBACH.

ARTHUR G. DAELLENBAOH. Witnesses:

S. Y. DoUDs, J. D. SwARTz.

